He joined Cisco through its acquisition of Arch Rock, where he was Director of Product Management and Customer Solutions, focusing on IPv6-based wireless sensor network technology for smart grid, energy, and environmental optimization applications.

Previously, Patrick led a product management team at Cisco, responsible for a suite of Cisco IOS software technologies, including IPv6 and IP Mobility. Patrick regularly speaks at conferences and industry events, including the IPv6 Forum, which he joined in 1999 as a Cisco representative. Patrick also acts as reviewer on European Commission–sponsored projects, including GEANT and ENVIROFI.

Patrick is co-author of the books Global IPv6 Strategies and Deploying IPv6 Networks, published by Cisco Press, as well as several white papers, such as Unified Field Area Network Architecture for Distribution Automation (2014) and IPv6 Architecture for Field Area Networks (2012). In June 2003, he received the IPv6 Forum Internet Pioneer Award at the San Diego Summit, and he is an IPv6 Forum Fellow. Before his days at Cisco and Arch Rock, he worked at Digital Equipment Corporation as a consulting engineer and was involved with network design and deployment. He received a degree in computer science from the Control Data Institute, Paris, France.